followed by president obama, vice president biden, and former congresswoman gabrielle giffords. -- paying tribute to her congressional aide, gabe zimmerman. later, al sharpton's action network annual convention. >> probably the most tragic of all our first ladies. she hated the office. hated it with a passion. ,> they took to the white house they had eight rooms they had to furnish. >> but she spent much of her time writing letters. to her dead son. in her great grief she called him, my precious child, i must write to you even though you are never to see it or know it. a very poignant letter written by a grieving mother. >> they were on a train and there was a terrible accident. >> the train ride was very devastating for the family. an axelrod broke on the train and benny did not survive the crash. >> she concluded that this was god's judgment. that the loss of her son was god's punishment. >> the house was too much for her to take care of. i don't think she was interested in housekeeping particularly. she wasn't capable of taking care of a house. >> she was glad to leave the place. >> it